262 EXPERIMENTS WITH 



7 inches high (in fact, a hat-box) for the flat paper, 

 cutting two small holes at / and g, so that the ants 

 passing from the nest to the food went through the box 

 entering at / and coming out at rj. The box was fixed 



Fiff. 25. 



at d, so that it might turn easily. I then, when they 

 had got to know their way, turned the box round as 

 soon as an ant had entered it, but in every case the 



Fig 26. 



ant turned round too, thus retaining her direction. I 



then varied the experiment as shown in Figs. 25 and 26. 



I replaced the white disk of paper, but put the 



food e at the middle of the board. When the ant had 



